This trail has re-opened!
In a bend of the Main Divide Rd, there is a gate witch leads to The Motorway. A short climb takes you to a large, flat area, then it's all downhill for three miles.
The Motorway switchbacks its way down the mountain along a skinny, loose, shale covered trail, ending at the Maple Springs Rd (paved section)
just up from the Visitor Center off Silverado Canyon Rd.